Marble is mainly composed of calcium carbonate with high natural whiteness and controllable impurities. After ultrafine grinding, marble powder serves as popular functional filler for coating plastic rubber paper making and daily chemical products. Whiteness fineness and oil absorption value directly affect gloss tensile strength and processing fluidity of final products. Many powder factories aim for high end filler market, yet ordinary grinding mills have unstable fineness and uneven particles, failing standards for high grade coating and plastic masterbatch. SCM Ultrafine Mill from SBM is optimized for soft calcium carbonate minerals and widely used for marble ultrafine powder production.
Standard dry processing workflow: marble scrap crushing and screening → impurity and iron removal → silo buffering → metered feeding → grinding and compressing → multi stage turbine classification → finished product collection and packaging. Marble is relatively soft and easy to overgrind. Multi stage high precision turbine classifier controls particle size accurately and prevents excessive fine powder from raising oil absorption value. Fineness ranges from 800 to 2500 mesh for different orders.
The mill has compact layout and small footprint. It is ideal for recycling marble scraps from stone factories to add value to stone waste. The whole system runs under sealed negative pressure with pulse dust collector to meet emission standards and reduce dust for green recycling production. No heavy load bearing is installed inside grinding chamber, so dust rarely causes bearing wear. It has low failure rate and light maintenance work. Variable frequency classifier allows fast fineness adjustment to switch between coating grade and plastic grade powder.
Marble raw materials vary greatly. Yellowish or iron rich ore reduces final whiteness. Iron removal and ore sorting are necessary for high end filler powder. Many factories grind mixed raw materials directly and get low whiteness powder which can only be sold at low price. SCM ultrafine mill can work with iron remover and screening machines to form complete marble filler production line.
If you plan to produce ultrafine filler powder from marble ore or stone scraps, please leave message or click business consultation. Submit raw material whiteness feed size target fineness and capacity. SBM engineers provide free production line layout.
Summary: This article introduces specification requirements of marble powder for filler industry. It shows stable classification and easy maintenance advantages of SCM mill and provides selection guide for marble powder plants.
